From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 01063423590; Sat, 28 Feb 2026 17:46:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300778; cv=none; b=dNqpceYDv6MSOd/2MVPMlKH9ExuIzux7SxJy+D/16LUy0cXoxZaLQbunmL1J/ITnZjFhE6wGVvKtDZZMnCZ/8OZMp3g4ac88M/Uv3d5VjO6e7mlYrBKSAVY/gsG5l05XFJUC8hAjEgm5c1+ASl6BJfqAqOrq4OhLU9tVzbSFmAU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300778; c=relaxed/simple; bh=SgPq7xrhOcLQj6wkSLJcjM+Gd+ZOYudKrRPy5x5YVY8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RJVb2N2S2R/9yicnfNIYptP4+1BHKaWYcDmFwDzRVtE6G8pEeO1h7R/yu1rHPaweEdYxTmxyCbKlUUK+eeCN5/na01ii1iZKHQ3qlVcR/2rbyzzojBEh3rSHxitlg42oHbAgBVrCR9s92sbvUJ7ObByX0/hKEROrYgjrugj3eqQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Pr2yvlxd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Pr2yvlxd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 12885C116D0; Sat, 28 Feb 2026 17:46:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300777; bh=SgPq7xrhOcLQj6wkSLJcjM+Gd+ZOYudKrRPy5x5YVY8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Pr2yvlxdk3unBMCkigwgRRNYPxICUnerVjFJCB/7+hXWJB9M1nLUIEeJ4M9kucCWf KGmrTSy7aIf0iUTOHJ39ruCXsbeAtp7QCjGHqHmT2csTkHcxYlDtTqGe9gUtSORxFQ B/9C399MUdM4nbzUKI1r9KvhPZrR4QfvrRC1W5D+8gVHl6y4SDp55sSKK6sZJxuoi1 hc+ZMrkcXECoyaj/mxwBIewklkfnxouB1EHOCROAY2UsCE/ylURPqGNIcHFZLy7fwr u7KRVlCU63oEJPHKMQp1yE5bImOrn7obSLv4GqAZV2KKSXES5hRk/eoQ3eCLROMvMq SMzMj3TLKoeGA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Andrey Vatoropin , Helge Deller , Sasha Levin Subject: [PATCH 6.19 808/844] fbcon: check return value of con2fb_acquire_newinfo() Date: Sat, 28 Feb 2026 12:32:01 -0500 Message-ID: <20260228173244.1509663-809-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Andrey Vatoropin [ Upstream commit 011a0502801c8536f64141a2b61362c14f456544 ] If fbcon_open() fails when called from con2fb_acquire_newinfo() then info->fbcon_par pointer remains NULL which is later dereferenced. Add check for return value of the function con2fb_acquire_newinfo() to avoid it. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: d1baa4ffa677 ("fbcon: set_con2fb_map fixes") Cc: stable@vger.kernel.org Signed-off-by: Andrey Vatoropin Signed-off-by: Helge Deller Signed-off-by: Sasha Levin --- drivers/video/fbdev/core/fbcon.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index 7be9e865325d9..a07737dcb45ad 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -1068,7 +1068,8 @@ static void fbcon_init(struct vc_data *vc, bool init) return; if (!info->fbcon_par) - con2fb_acquire_newinfo(vc, info, vc->vc_num); + if (con2fb_acquire_newinfo(vc, info, vc->vc_num)) + return; /* If we are not the first console on this fb, copy the font from that console */ -- 2.51.0